<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <div id="app">
        <input type="button" @click="changShow" value="改变图片显示">
        <br>
        <input type="button" @click="addAge" value="增加年龄">
        <br>
        <img v-show="isShow" src="">
        <img v-show="age>25 " src="">

    </div>
    <!-- 开发环境版本，包含了有帮助的命令行警告 -->
    <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
    <script>
        var app = new Vue({
            el: '#app',
            data: {
                isShow: true,
                age: 20
            },
            methods: {
                changShow() {
                    this.isShow = !this.isShow;
                },
                addAge() {
                    this.age++;
                    console.log(this.age);
                }
            }
        })
    </script>
</body>

</html>